Apparatus for lasting shoes



Oct 5, 1937.. w. B. THOMPSON I 2,095,200

APPARATUS FOR LASTING SHOES Filed July 6, 1954 2 Sheets-Sheetlaffoz'wazy Oct. 5 1937. w; B. THOMPSON 2,095,200

APPARATUS FOR LASTING SHOES Filed July 6, 1934 2 Sheets-Sheet 2 11 iawF? i IIIIIIIIIIlI/I I72 warrior Patented Oct. 5, 1937 PATEL T criesAPPARATUS roa LASTING SHOES Wayne B. Thompson, Winchester, Mass assignorto Spray Engineering Company, Somerville,

Mass, a corporation of Massachusetts Application July 6, 1934, SerialNo. 733,973

17 Claims.

The present invention relates to machines which are used in the variousprocesses for the cement lasting of shoes to apply an adhesive to shoeparts in order that they may be secured together in the lastingoperation.

In my Patent No. 1,990,803, February 12, 1935, I have disclosed animprovement in the art of lasting shoes in which a modified form of thespray gun disclosed in my Patent No. 1,779,922,

1; October 28, 1930, is utilized to advantage. As disclosed in saidPatent No. 1,990,803 the work is stationary and the spray gun is held inthe operatives hand so that thev discharge nozzle of the spray gun maybe transferred along the L1 stationary work. Because of the reversecurves along the edge of the shoe bottom from the breast corner at oneside of the shoe around the toe to the breast corner at the other sideof the shoe, it is necessary for' the operative to twist his wrist 3considerably during the transfer of the nozzle of the spray gun along oraround the shoe bottom. Experience has demonstrated that this mode ofoperation is tiring.

The principal object of the present invention 25 is to produce anapparatus, for use in practicing the method disclosed in said Patent No.1,990,803,

in which'the work is presented by both hands of the operative torelatively stationary mechanism for delivering adhesive in the form ofspray.

To the accomplishment of this object and such others as may hereinafterappear, thefeatures of the present invention reside in certain devices,combinations, and arrangements of parts hereinafter described and thenset forth broadly and in detail in the appended claims, possessingadmounted for operation and also showing the source of adhesive supply;

,Fig. 2 is a view in left side elevation, partially in section, showingthe construction of the spider base and showing the spray gun in use forapplying adhesive to an insole of a shoe assembledwith. an upper and alining on a last;

Fig. 3 is a detail View in plan of the spray gun. and of the partsassociated immediately there- P with; {i p f Fig. his detail view insectional elevation taken along the line 4-4 of Fig. 2, the spray gunnot beingshown; and

Fig. 5 is a view in sectional plan taken along the line 5 5 of Fig. 2.

Referring to the drawings, the illustrated embodiment of the presentinvention is provided with a dished spider base 7 (Figs. 1, 2 and 5) thefree ends of the three legs of which are adapted to rest flat on thefloor and are provided with screw or bolt apertures 8. The hub 9 of thebase is provided with a vertical passage l (Fig. 2) in which anupstanding tube H is vertically movable. A set screw [2 (Figs. 1 andcarried by the hub holds the tube in any desired position of elevation.

Referring to Fig. 4, upon the upper end of the tube ll there isthreadeda cap it surmounted by anupstanding lug is provided with anunthreaded opening H5. The shank of a stud it extends loosely throughthis opening, with the hexagonal head of the stud abutting one side ofthe lug M. Threaded upon the shank of the stud I6 and abutting theopposite side of the lug i4, is a gun support l'i. With thisconstruction the position of the gun support I? may be varied angularlywith respect to the cap l3 and yet, by reason of the opening i5 beingunthreaded, the support IT and the head of the stud l6 always abut thelug It so that the support is held firmly in place. Projecting forwardlyfrom the support N (Fig. 2) is an integral yoke Hi the arms of which(only one arm being shown) receive a thimble I9 threaded into a spraygun 20. Hexagonal locknuts 2i, threaded on the thimble, abut the top andbottom, respectively, of the yoke 18 and hold the spray gun in place. Itwill be seen that the above named elements comprise, in'effect, a standupon which the spray gun 20 is adjustably mounted.

Preferably the spray gun 20 is of the general type disclosed in PatentNo. 1,779,922, issued October 28, 1930. More specifically the spray gunis identical with that disclosed in my Patent No. 1,990,803, abovereferred to, which is a modified form of the gun described and claimedin said Patent No. 1,779,922 and is designed for use in applying anadhesive to shoe parts, thereby supplanting the brush formerly used toapply an adhesive to these parts in lasting operations. The spray gun 20being identical in construction and mode of operation with thatdisclosed in my said Patent No. 1,990,803, it need not be described indetail here. It is sufficient to say that the characteristic compressedair and coating material valve spindles 299 and 29h respectively, (Fig.3)

which are arranged in planes normal to each other, are controlled from athumb piece 22 (Figs. 1, 2 and 3) forming one end of an operating lever23 at the side of the gun. The thumb piece 22, in addition to beingarranged to be engaged and operated by the operatives thumb, is alsoarranged to abut an adjustable stop 24 threaded into the body of the gunfor limiting the movement of the thumb piece. As explained more indetail in my Patent No. 1,779,922, there is a connection 202 between thelever 23 and the adhesive valve spindle 26| so that both the spindles26B and 26| may be operated by the thumb of the operatives hand in itsnatural thumb closing movement.

Referring to Fig. 4 again, it will be seen that the stud I6 has apassage 25 and that the support I! has a passage 26, larger than thepassage 25 and aligned with it. These two passages are horizontal, andextending loosely through them is a spindle 21, the right hand end ofwhich, viewing Figs. 1 and 4, is provided with spaced flanges 28 and 29,and the left hand end of which 1 is provided with a reduced portion 30forming a end of the shank of the stud I5.

the flanges 28 and 29 on the spindle 21.

shoulder 3|. Mounted loosely on the reduced portion 30 in engagementwith the shoulder 3| is an arm 32 secured on the spindle by a nut 33threaded to a reduced portion 34 extending from the reduced portion 30.The spindle 2'! is maintained normally in the Fig. 4 position, that is,with the flange 28 abutting the head of the stud l6, by means of aspring 35 coiled about the spindle partially within the support passage26 and interposed between the arm 32 and the The arm 32 has a lengthsuch that a boss 36 at one end thereof may be aligned with the thumbpiece 22 of the spray gun as shown in Figs. 2 and 3.

In order to move the spindle 2'! to the right, viewing Figs. 1 and 4,against the tension of the spring 35, and thus cause the boss 35 on thearm 32 to move the thumb piece 22 to operate the spray gun, the presentinvention contemplates connecting these elements with operating meanswhich the operative may actuate independently of his hands. In theillustrated embodiment of the present invention the movement of thethumb piece 22 is controlled by the operatives foot.

To this end the cap I3 is provided with a pair of ears 31 (Figs. 1 and4) between which is pivoted a bell crank lever 38 by means of a pin 39.Threaded into the upper arm 40 of the bell crank lever is a stud 4|provided with a knob 42 having cam surfaces interposed between andengaging To the other arm 43 of the bell crank lever a clevis 44 ispivoted by means of a pin 45, and depending vertically from the clevis44 is a link 46. With this construction it will be seen that a downwardpull on the link 46 will cause the knob 42 to press against the flange29 and so cause the spindle 2'! and the arm 32 to move to the right,viewing Figs. 1 and 4. The boss 36 on the arm 32 is substantiallyengaged with the thumb piece 22 when the apparatus is not in operation,as shown in Fig. 1, and as a consequence any movement of the spindle 21and the arm 32 to the right causes the boss 36 to move the thumb piece22 and so operate the spray gun.

In order to pull the link 46 downwardly by foot power, the hub 9 of thebase is provided at one side with an car 41, (Figs. 2 and from whichdepends a clevis 48. Pivoted to the clevis 48 by means of a pin 49 isone end of a lever 50. the opposite end of which is provided with apedal 5|, (Fig. 5). Intermediate its ends the lever 50 is provided withan ear 52 to permit the formation of an opening 53 through which the endof the link 46 loosely passes. A nut 54 on the end of the link serves tohold the pedal 5| elevated from the floor.

The spring 35 is powerful enough to overcome the weight of the pedallever 50, the link 46, the bell crank lever 38 and the spindle 21 whenno pressure is applied to the pedal 5| by the operative. Stated inanother way the spray gun 20 is held out of operation and the pedal 5|is held normally raised by the spring 35, and when the operativereleases his foot from the pedal after having pressed it down to movethe spindle 21 to the right to operate the gun, the spring 35 draws thespindle to the left and raises the pedal 5| to throw the gun out ofoperation.

As is well understood by those skilled in the art, in the use of sprayguns employing a motive agent, the speed and amount of application ofthe coating material to the surface to be coated may be varied by theamount of opening movement of the motive agent and coating materialvalves within the gun. In the type of gun disclosed in Patent No.1,779,922 and in the modification thereof disclosed in my Patent No.1,990,803 referred to above, the amount of opening movement of thevalves may be limited by a stop 24 (Fig; 2) which limits the amount ofmovement of the thumb piece 22. So long as the gun is held in theoperatives hand, this type of stop is very effective because there is nostrain on the gun when the thumb piece strikes the stop. In mounting thegun so that it may be operated by foot power, however, this type of stopis not desirable for the reason that foot movement is coarse as comparedto the delicacy of movement of the thumb, and foot pressure is verygreat as compared to that offered by the thumb, and further, as comparedto the minimum necessary to move the thumb piece. It is obvious,therefore, that the stop which limits the movements of the thumb piece22 should not be on the gun, but should be elsewhere so that there is nostrain on the gun when the pedal 5| is depressed.

To achieve this result the stop 24 is threaded into the gun as far as itwill go so that the thumb piece 22 cannot strike it. The stop 24 isshown in this position in Fig. 4, As a substitute for the stop 24 theend of the arm 32 opposite the boss 36 is provided with an opening 55(Fig. 4) through which is threaded a stud 56 provided with a knurledhead 51. The threaded end of the stud 56 is reduced to form a pin 58 anda shoulder 59. Depending outwardly and rearwardly from the support I!is. an integral stop 60 (Figs. 1 and 4) provided with a narrow channel6| which receives the pin 58. The stop 6|] is aligned with the stud 56so that when the arm 32 moves to the right, viewing Figs. 1 and 4, theshoulder 59 on the stud strikes the stop and thus limits the movement ofthe arm and therefore the movement of the boss 36 and the thumb piece22. The stud 56 being threaded in the arm 32, it may be adjusted to varythe amount of movement of the spindle 2'1, and the stud is held in anydesired adjustment by a lock nut 62. With this construction the forceapplied to the pedal 5| in excess of that necessary to move the thumbpiece 22 is directed against the stop 60, and as this stop is anintegral part of the support ll, none of this excess force is directedagainst the 'is a tube 82.

gun itself to subject it to strain asit is supported on the yoke l8(Fig. 2).

It will be observed that the pin 58'and the channel 6| play no part inthe functioning of the stop 68. These elements function to maintain theboss 36 on the arm aligned with the thumb piece 22. As stated above, thearm 32 is held on the spindle 21 by the nut 33, the spindle 21 is notthreaded to the stud I6, and the support I! is threaded only to the studl6 and not to the lug M on the cap l3. While this construction providesa convenient means of adjusting the angle of the spray gun 20, it willbe seen that if the position of the support I1 is shifted slightly. withrespect to the cap I3, the arm 32 will not necessarily, move with thesupport and the boss 36 may no longer be in alignment with the thumbpiece 22. This result is prevented by the pin 58 and the channel Blbecause any movement of the support I! relatively to the cap, as whenthe angle of the gun is being changed, is transferred through the pin 58to the arm 32.

To prevent. any twisting of the spray gun 20 as the result. of movingthe arm 32 to operate it, l the support I! is provided with a thrustbearing comprising an arm 63 (Figs. 1, 3' and 4) upstanding integrallyfrom the support and carrying a stud 64 threaded-into engagement withthe gun.

on a nipple extending from the thimble l9 secured to the gun. It will beapparent that the adhesive may be kept in any source of supplyconvenient for use with the present apparatus. It is preferred, however,to utilize the apparatus shown in Fig. 1, for reasons whichwill'presently appear. V 1 v This apparatus comprises a spider base 61and a tube68 vertically movable thereon,; constructed in a manner likethat of the base 1 and the tube ll. Mounted for vertical movement on thetube68, and provided with a set screw 69, is a hub 10 from which extendsan integral'arm H provided with a table 12 which supports a jar 13containing the adhesive. To maintain the jar in position, the table isprovided with three or more posts 14 (only two being shown) which may beprovided with rubber covers substantially engaging the jar. Adapted torest on the mouth of the jar is a cover 15 provided with a dependingflange 16 adapted to fit loosely within the mouth of the jar.; The coveris also provided with a central opening 11; a vent l8, and upper andlower bosses l9 and 80, respectively,: through which the opening 11 isformed. One end of a gooseneck BI is mounted in the boss 19 and theother end of the gooseneck receives the end of the hose connection 66.Depending from the lower boss 88 into the jar 13 With this construction,the flange 16 serves to steady the cover l on the mouth of the jar andto guide and hold the tube 13 in proper position within the jar.

The adhesivecontained in the jar 13 is preferably lateX, and it is wellknown that latex coagulates readily: upon exposure to the air. As thecap 15 and the tube 82 must be removed from the jar 13 when it is to berefilled, it is apparent that the latex may coagulate in a film on theinterior of the tube so that when the tube is reand drawn into the spraygun andupon the work in the form of pills.

To prevent this, the hub is provided with an arm 83 on which is formed acup 84 for holding a jar 85 of water. A bracket 86, interposed betweenthe hub 18 and. the arm 83, projects upwardly and is provided with ahorizontal arm 87 positioned over the jar 85. The arm 81 serves as asupport for the cover (indicated in construction lines) when it isremoved from the jar l3 and is provided with a central opening 86 sothat the tube 82 may extend into the water in the jar 85. In this mannerthe latex in the tube 82'is not exposed to the air while the jar I3 is.being refilled, and there is no opportunity for the latex in the tubeto coagulate and so clog the gun or possibly injurethe work. It isappreciated that the latex in the tube 82 is exposed to the air whilethe tube is being transferred from the jar 13 to the jar 85 and backagain. Expe rience has demonstrated, however, that this time interval istoo short for the air to affect the latex in the tube.

In operating the illustrated embodiment of the present invention theoperative stands in the space at the back of the apparatus (Fig. 1). Inthis space the operative is out of the zone of the spray delivered tothe work, that is, the spray is delivered away from the operative. Thestand for the gun is constructed to provide spaces at oppositesides ofthe spray gun out of the zone of spray so that the operative may extendhis arms forwardly and hold the work in both hands to present the workin position to receive the spray delivered by the spray gun. The standis sufficiently low to allow the operative to look over the spray gundownwardly upon the work. If

the operative stands at the apparatus he operates the pedal 51 with thesole of his foot. If he is seated at the apparatus the pedal is operatedwith his heel. The set screw 12 permits the oplarly relatively to thecap, 13.

In my said Patent No. 1,990,803 above referre to, I have described theuse of the spray gun 28 in lasting operations where the gun is held inthe operatives hand and the thumb piece 22 is operated by his thumb.When the gun is so held, the work being mounted upon a support, theoperative slides the nozzle of the'gun over or along the portions of thework to be coated. 'With the present invention, however, the gun is notmoved at all, and the operative holds the work in his hands and moves itbodily with respect to the gun to transfer the portions to be coatedinto the path ofdischarge of the nozzle. 'The result achieved with thepresent'invention is the same as that where the gun is hung on the hand,so far as mere discharge of coatingmaterial upon a surface is concerned,but the result is achieved in a much more efficient and speedy manner,and the spray is at all times discharged directly away from theoperative. 1

As stated in my said Patent No. 1,990,803 the conical nozzle of thespray gun 26 is shaped as it so that the discharge orifice may be placedvery near the work and so that if the: marginal portions of the upperand its lining are not secured together before being assembled on alast, the nozzle may be inserted between the adjacent faces of thesemarginal portions to separate them. When the gun is. hung on the handthere is no means of aiding the insertion of the nozzle between themarginal portions, with the result that if the upper and its lining tendto cling together, some difficulty is experienced in separating them bymeans of the nozzle alone. With the present invention, however, theoperative has both hands: free to hold and manipulate the work, and as aconsequence he may separate the marginal portions of the upper and itslining manually so that the discharge nozzle may be inserted betweenthem with ease and in a minimum time.

To cause the discharged coating to be applied around or along theseparated faces, the operative uses both his hands to move the work inthe path of discharge or the nozzle, turning the work when necessary andeasily holding it so positioned with respect to the nozzle so that theseparated faces are provided with a uniform coating as desired. Thecoated faces of the marginal portions of the upper and its lining may bepressed together by'the operatives hands after the coating operation hasbeen completed and the separated faces withdrawn from the nozzle, or theoperative may engage the insole with the nozzle and then slide themargin of the work towards the nozzle so that its discharge end isinterposed between the marginal portions of the lining and the insole.In this position the coated face of the lining may be wiped intoadherence with the adjacent coated face of the upper by drawing the workalong the discharge nozzle, at the same time exerting a slight downwardpressure to press the lining against the upper as they move over thestationary nozzle. By the same mode of operation, the work may be movedand turned relatively to the discharge nozzle to effect the applicationof coating to the exposed face of the marginal portion of the lining andto the marginal portion of the insole, after which the unit comprisingthe upper adhesively united to the lining may be overdrawn upon themarginal portion of the insole and secured thereto by the previouslyapplied adhesive in any suitable one of the well known machines.

Since the operative, by using both hands to hold and move the workrelatively to the stationary spray gun achieves the same coating effectas when he manually moves the spray gun relatively to work mounted upona support, it is not deemed necessary to describe in further detail herethe position of the coating on the various shoe parts. This is fullydescribed in my said Patent No. 1,990,803; However, in Fig. 2, I haveshown an upper 89 secured to its lining 90 and assembled with an insole94 upon a last 92. The work is held against the nozzle as shown so thatit lies substantially flat on the insole with its discharge end 93located at a point spaced from the vertex of the angle formed by theunit upper and the adjacent face of the insole a distance substantiallycommensurate with the width of the. upstanding lining face of the unitupper. Holding the insole engaged with the nozzle in this position, theoperative depresses the pedal and then slides the insole along thenozzle to transfer the portions to be coated into the path of discharge,thereby producing upon them a stripe of adhesive uniform in thicknessand substantially uniform in width.

Nothing herein explained is to be interpreted as limiting the variousfeatures of the present invention in the scope of its application to usein connection with the particular apparatus or the particular mode ofoperation, or both, selected for the purposes of illustration anddisclosure.

While the particulars of construction herein set forth are well suitedto one mechanical form of the invention and to the uses to which it isput, it is notlimitcd to these uses, nor to these particulars ofconstruction, nor to the conjoint use of all its features, nor is it tobe understood that these particulars are essential since they may bemodified or varied within the skill of the artisan without departingfrom the true scope of the actual invention, characterizing features ofwhich are set forth in the following claims by the intentional use ofgeneric terms and expressions inclusive of various modifications.

What is claimed as new, is:

1. In an apparatus for applying coating, the combination with a,support, a spray gun, means for securing the spray gun to the support,and movable means controlled by the operative for operating the gun, ofan abutment for the gun to prevent bodily movement thereof on thesupport upon movement of the gun operating means.

2. In an apparatus for applying coating, the combination with a spraygun provided with an operating lover, a support on which the. gun ismounted, an arm bodily movable toward and away from the support andprovided with a portion alignable with the operating lever for moving itto throw the gun into operation upon movement of the arm, and means formoving the arm, of means for maintaining the alignment of the armportionv and the operating lever.

3.. In an apparatus for applying coating, the combination with a spraygun, a support on which the gun is mounted, a spindle movable on thesupport, an arm carried by the spindle and movable therewith to throwthe spray gun into operation, and means for moving the'spindle, of meanscarried by the arm and engageable with the support for limiting themovement of the spindle.

4. In an apparatus for applying coating, the combination with a spraygun provided with an operating lever, and a support on which the gun ismounted, of means controlled by the operatives foot for operating thegun, said means comprising a spindle movable on the support, an arm carried by the spindle and movable therewith for moving the operatinglever, a pedal, and means for operatively connecting the pedal with thespindle to cause it to respond to movement of the pedal.

5. In anapparatus for applying coating, the combination with a support,a spray gun, provided with an operating lever, mounted on the supportfor angular adjustment thereon, an arm movable relatively to the supportand provided with a portion alignable with the operating leverregardless of the angular adjustment of the gun for moving the operatinglever to throw the gun into operation, and means for moving the arm tocause it to move the operating lever, of means carried by the arm andcooperating with the support for maintaining the alignment of the armportion with the operating lever in any angular adjustment of the gun. Q

6. In an apparatus for applying coating, the combination with a spraygun, a support on which the gun is mounted, a'spindle movable on thesupport, and an arm carried by the spindle movable therewith to throwthe gun into operation, of means controlled by the operatives foot formoving the spindle.

'7. In an apparatus for applying'coating, the combination with a spraygun, a support on which the gun is mounted, a spindle movable on thesupport, an arm carried by the spindle andmove able therewith to throwthe gun into operation,

a pedal, and means for operatively connecting the pedal with the spindleto cause it to respond to movement of the pedal, of'means adjustablysecured to the arm and cooperating with the support for limiting themovement of the spindle.

8. In an apparatus for applying coating, the combination with a spraygun, a support on which the gun is mounted for angular adjustment, aspindle movable on the support, an arm movable on the spindle andmovable bodily therewith to throw the gun into operation, a pedal, and

means for operatively connecting the pedal with the spindle to cause itto respond to movement of the pedal, of means carried by the armcooperating with the support for maintaining the arm in position tothrow the gun into operation of the spindle and for maintaining the armin position to throw the gun into operation regardless of the angularadjustment of the gun.

10. In an apparatus for applying coating, the

combination with a support, a spray gun, provided with an operatinglever, mounted on the support for angular adjustment rotatively about ahorizontal axis, a member carried by the support and movable along saidhorizontal axis, an arm carried by said member and provided with aportion alignable with said operating lever for moving said lever tothrow the gun into operation, and means for moving the member to causethe arm to actuate the operating lever, of means carried by the arm andcooperating with the support for maintaining the alignment of the armportion with the operating lever in any angular adjustment of the gunabout the horizontal axis.

11. In an apparatus for applying coating, the combination with a spraygun, a support therefor, a spindle longitudinally movable on thesupport, said spray gun being mounted on the support for angularadjustment rotatively about the spindle, an arm movable on the spindleand movable bodily therewith during its longitudinal movement to throwthe gun into operation, a pedal, and means for operatively connectingthe pedal with the spindle'to cause it to move longitudinally inresponse to movement of the pedal, of means carried by the armcooperating with the support for maintaining the arm in position tothrow the gun into operation regardless of the angular adjustment of thegun.

12. In an apparatus for applying coating, the combination with a spraygun, a support therefor, a spindle longitudinally movable on thesupport, said spray gun being mounted on the support for angularadjustment rotatively about the spindle, an arm movable on the spindleand movable bodily therewith during its longitudinal movement to throwthe gun into operation, a pedal, and means for operatively connectingthe pedal with the spindle to cause it to move longitudinally inresponse to movement of the pedal, of means carried by the armcooperating with the support for limiting the longitudinal movement ofthe spindle and for maintaining the arm in position to throw the guninto operation regardless of the angular adjustment of the gun.

13. In an apparatus for applying coating, the combination with a spraygun, a support on which the gun is mounted, a spindle movable on thesupport, and an arm operatively connected to the spindle so as to bemoved by it to throw the gun into operation, of means controlled by theoperatives foot for moving the spindle.

14. In an apparatus for applying coating, the combination with a spraygun, a support on which the gun is mounted, a spindle longitudinallymovable on the support, and an arm operatively connected to the spindleso as to be moved by it to throw the gun into operation, of meansinc1uding afoot pedal and link means for moving the spindle. V

15. In an apparatus for applying coating, the combination with a spraygun, a support on which the gun is mounted, said support being providedwith a passage, a spindle movable in the passage,

and an arm operatively connected to the spindle so as to be moved by itto throw the gun into operation, of means controlled by the operativesing lever to actuate the gun, a pedal, and means operatively connectingthe pedal with the spin dle to cause it to respond to movement of thepedal.

17. In an apparatus for applying coating, the combination with a spraygun provided with an operating lever, and a support on which the gun ismounted, said support being provided with a passage, of means controlledby the operatives foot for operating the gun, said means comprising aspindle movable in the support passage, an arm operatively connected tothe spindle and responsive to movement thereof for moving the operatinglever to actuate the gun, a pedal, and means operatively connecting thepedal with the spindle to cause it to respond to movement of the pedal.

WAYNE B. THOMPSON.

